Question

A Very long magnef of pole strength 4 Am is placed vertically with its one pole on the tabIe .The distance from the pole, the neutral point will be formed is $(B_H=4\times 10^{-5}T)$

• A. 0.5 m
• B. 0.1 m
• C. 0.15 m
• D. 6.66 m

Answer 1

Answer: (B)

$\frac{{\mu }_0}{4\pi }\frac{m}{d^2}=B_H$